Tachograph



FIG. 1 is a front view of the tachograph;

FIG. 2 is a back view thereof;

FIG. 3 is a top side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is right side view thereof;

FIG. 7 is a perspective view thereof;

FIG. 7a is an enlarged and shaded view of the perspective view of FIG. 7; and,

FIG. 7b is a further enlarged and shaded view of the perspective view of FIG. 7. 

The ornamental design for a tachograph, as shown and described. 